Door



E. A. SMITH.

DOOR.

APPLICATION FILED DEC. 12. 1918.

Patented July 13, 192% till nnwann a. srurrrr, or new resin, n. r.

Specification of Letters Patent.

Patented July 13, 119 3 Application filed December 12, 1918. Serial No. 266,502.

To all whom it may concern:

Be it known that l, EDWARD A. SMITH, a citizen of the United States of America, and a resident of New York, county of Bronx, and State of New York, have invented certain new and useful Improvements in Doors, of which the following is a specification, reference being had to the accompanying drawin s, forming a part thereof.

My invention relates to new and useful improvements in doors, such as are particularly adapted for closing the openings of elevator hatchways, and its object is to provide a simple and inexpensive support for doors of this character, by means of which they are guided laterally as well as vertically. More specifically, its object is to provide a rigid door which forms a fire-proof closure for hatchway openings and which when raised vertically, is moved inwardly to pass between projections such as sills and the elevator car.

In order that my invention may be thoroughly understood 1 will now proceed to describe the samein the following specification, and will then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a front elevation of a plurality of doors and supports therefor which embody this invention, together with parts of a hatchway structure shown in sect1on.

Fig. 2 is a sectional side elevation of the same parts with the outline of an elevator car shown in broken lines.

Fig. 3 is a sectional plan View of the parts shown in Fig. 1.

Like characters of reference designate corresponding parts in all the figures.

10 designates the walls of a building adjacent an elevator hatchway. 11 designates the floors of such a structure of which the portions 12 form the thresholds or sills projecting into the hatcliway. An angle iron 13 is secured to the wall 10 and another angle iron 14 secured, thereto to form a boxlike structure which incloses a counter-' weight 40. A similar arrangement is provided on the opposite side of the doorway.

Secured to the parallel surfaces of the parts 14 on opposite sides of the doorway are channel guides 20 which are vertically disposed throughout the greater part of their length. The lower end of each channel uide is bent outwardly as at 21 and oontlnueda short distance below this bend to form lower vertical part 22 which, if desired, may be bent outwardly at its end as shown at 23.

Above the bend 21 of each channel is a straight part 24 which is vertical. At 25 is an 1nward bend at about the center of the length of each guide, above which is another straight vertical portion 26. The lower parts 23 of the guides are in vertical alinement with one another while the part 26 of each guide overlaps and is parallel with the part 24: of the adjacent guide next above it.

The doors 30 are rigid structures of metal or wood. lfof wood they are preferably sheathed with metal. to give them a fireresisting character. At the lower corners of the door are inwardly projecting rigid brackets 31 near the ends of which are rollers 32 which run in one of the guides 20. Above the brackets 31, in alinement therewith and spaced a substantial distance from them are other rigid brackets 33 which carry rollers 34: in another of the guides.

Such doors are usually counterbalanced and any suitable arrangement for this purpose may be used. In the drawings the counterweights are shown with cables d1 running from them, up over stationary sheaves 42 and down to the lower corners of the doors to which they are attached at 42K.

lFhe operation of this device will be made clear from the following description. The length of the brackets 31 is as much greater than the len th of the brackets 33 as the.

distance of the center line of the parts 21 of the guides 20 from the plane of the closed door is greater than the distance of the center line of the parts 22 from the same plane. Consequently, the door will be held in a vertical position. The brackets 31 and 33 are spaced apart a distance equal to the ver tical distance between the bends 21 and 35. The result is that when the door 30 is raisal its rollers 34 will reach the bends 24 at the same time its rollers 32 reach the bends A. continued lift of the door will cause the rollers 34 to pass through the bends 21 into the guide parts 24 and at the same time its rollers 32 will pass through the bends :25 into the guide parts 26. During this part of the operation the door will be moved ole liquely inwardly but will still be maintained in a vertical position. Further lift of the door will cause it to move up vertically between the projecting sill 12 and the adjacent side of the elevator car which is designated,

(ill

in Fig. 2 by the reference numeral 50, into some such position as that in which it is shown in dot and dash lines at 30 in Fig. 2.

In lowering the door the operation is reversed and the door brought to its closing position with its lower edge resting upon the threshold and with its upper part against the lintel as at 15. \Vhen the lower ends of the guides are bent outwardly as at 23 this causes the upper part of the door to exert a pressure against the lintel.

I intend no limitations other than those imposed by the appended claims.

WVhat I claim is:

l. A door, guides therefor at opposite sides of the door opening, rigid brackets projecting from the door near the edges thereof, said brackets being spaced vertically a fixed distance, and members on said brackets arranged to be engaged by and to move in the guides, said guides having offset portions spaced vertically the same distance as that between the brackets, arranged to impart a transverse bodily sliding movement to the door when said door is moved vertically.

2. A door, a pair of guides therefor at each side of the door opening in parallel relation, rigid brackets projecting from the door near opposite edges thereof and a member of each bracket arranged to be engaged by and to move in one of said guides, other rigid brackets above said first mentioned brackets, and a member on each of said other brackets arranged to be engaged by and to move in the other of said guides, the two guides on either side of the door openlng having offset portions spaced vertlcally the same distance as the vertical distance be tween the brackets on the corresponding side of the door and arranged to impart a trans- Verse bodily sliding movement to the door when said door is moved vertically.

3.-A door, a pair of overlapping guides therefor at each side of the door opening,

rigid brackets projecting from the door near the lower corners thereof, a roller on each bracket arranged to be engaged by and to move in one of said guides, other rigid brackets above said lower brackets, and a roller on each of said other brackets, a shorter distance from the surface of the door than that of the rollers on the lower brackets, arranged to be engaged by and to move in the other of said guides, the two guides on either side of the door opening having offset portions spaced vertically the same distance as the vertical distance between the brackets on the corresponding side of the door and arranged to impart a transverse bodily sliding movement to the door when said door is moved vertically.

4. A door, a pair of overlapping guides therefor at each side of the door opening, rigid brackets projecting from the door near the lower corners thereof, a roller on each bracket arranged 'to be engaged by and to move in one of said guides, other rigid brackets above said lower brackets, and a roller on each of said other brackets, a shorter distance from the surface of the door than that of the rollers on the lower brackets, arranged to be engaged by and to move in the other of said guides, the two guides on either side of the door opening having offset portions spaced vertically the same distance as the vertical distance between the brackets on the correspondingside of the door and arranged to impart a transverse bodily sliding movement to the door when said door is moved vertically, the lower ends of the guides which engage the rollers on the upper brackets being bent outwardly.

5. A plurality of doors in vertical alinement, overlapplng guides therefor at each side'of the door openings, rigid brackets projecting from each door near the lower corners thereof, a roller on each bracket arranged to be engaged by and to move in one of said guides, other rigid brackets above said lower brackets and a roller on each of said other brackets, a shorter distance from the surface of its door than that of the rollers on the lower brackets on the same door, arranged to be engaged by and to move in the other of said guides, two guides on either side of each door opening having offset portions spaced vertically the same distance as the vertical distance between the brackets on the corresponding side of the adjacent door and arranged to impart a transverse bodily sliding movement to the door when said door is moved vertically, the lower end of each guide being arranged to receive the rollers on the upper brackets of one door and the rollers on the lower brackets, and having a portion adapted to receive the rollers on the lower brackets of the next door above.

In witness whereof, I have hereunto set my hand this 16 day of October, 1918.

, EDWARD A. SMITH. 

